[ 4277.918924][T28742] gre: GRE over IPv4 demultiplexer driver
[ 4279.609528][T28765] ip_gre: GRE over IPv4 tunneling driver
[ 4329.092012][T29336] ip6_gre: GRE over IPv6 tunneling driver
[ 4363.256406][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4368.376334][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4372.664340][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4377.719334][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4456.795986][T30818] ping (30818) used greatest stack depth: 22656 bytes left